The Xperia Z1 to run on Google’s humanoid four.4.2 KitKat unleash. We’ve updated the review once more to mirror this.Sony was the primary of the big-name makers to launch a brand new 2013 flagship smartphone back in March of last year, with the Sony Xperia Z, a 5-inch model externally rather just like the new Sony Xperia Z1.The Xperia Z beat the HTC One and Samsung Galaxy S4 to promote, providing a quad-core processor, 1080p show, 13MP camera, 2GB of RAM, and water and dirt resistance. it absolutely was impressive.But a brand new Sony flagship arrvied for the time of year winter 2013 season, within the giant, shiny form of the Xperia Z1. there is a a lot of powerful processor within, a higher-spec camera and a brand new metal chassis, however it’s still recognisably associated with the older Z, each in style terms and also the software system it runs.There’s conjointly associate upgraded atomic number 13 chassis that rounds off the sharp edges of the Z in favour of a gentler, colder, metallic feel. The headline feature is that the twenty.7MP camera detector, on paper an enormous upgrade over the 13MP unit within the older Z.The phone’s ports microSD, USB and small SIM square measure all hidden behind rubber stoppers, to stay water, mud and fluff treed.The Z1’s 3.5mm phone jack is receptive the weather on the top-left corner of the phone, therefore Sony’s done somewhat of helpful work here to waterproof that and do away with the rubber stopper.